US6373680B1 - Method and device for ion generation - Google Patents
Method and device for ion generation Download PDFInfo
- Publication number
- US6373680B1 US6373680B1 US09/568,606 US56860600A US6373680B1 US 6373680 B1 US6373680 B1 US 6373680B1 US 56860600 A US56860600 A US 56860600A US 6373680 B1 US6373680 B1 US 6373680B1
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- United States
- Prior art keywords
- electrode
- ions
- applying
- ion
- stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
Definitions
- the present invention relates to ion generation.
- efficiency relates to the proportion of ions exiting a device for ion generation, relative to the total volume produced.
- the efficiency is also referred to herein as may the coefficient of ion exit.
- ions are removed from the corona system by means of an air flow from a fan or a compressor. Accordingly, the ion flow direction to the generator exit coincides with that of the air flow.
- the present invention seeks to provide a method and device for generating ions which are characterized by an efficiency which is substantially greater than in the known art.
- the present invention further seeks to provide a method and device for substantially reducing the emission of ozone from the device, the generation of which accompanies corona discharge generation of ozone.
- a method of high efficiency generation of ions of desired polarity which includes the steps of positioning a first electrode at a predetermined spacing from a second electrode having a closed shape configuration, applying to both electrodes a direct voltage of the same polarity, at the same time as applying the direct voltage, applying high voltage pulses across the first electrode only, thereby to cause ion generation in the vicinity of the first electrode and to set up a rapidly moving ion stream from the first to the second electrode along an electrical field therebetween, wherein the duration of the pulses is shorter than the time taken for the ion stream to reach the second electrode, and wherein ions in the ion stream have the same polarity as the second electrode, thereby to be repelled and concentrated as they flow through the second electrode.
- the coefficient of ion removal is regulated by changing the magnitude of direct voltage supplied to the electrodes.
- a method for the generation of a stream of ions, with reduced ozone content which includes positioning a first electrode opposite a second electrode and applying predetermined electrical charges across the first and second electrodes so as to generate an ion stream by corona discharge; and applying a negative pressure gradient to the ion stream, thereby to deflect ozone generated by the corona discharge to a direction different from that of the flow of ions.
- FIG. 1 is a diagrammatic representation of an ion generation device, constructed and operative in accordance with a preferred embodiment of the invention.
- the device 100 includes a housing 102 , which has a front chamber 104 in which an ion stream is generated, and a rear chamber 106 , for neutralizing ozone. Chambers 104 and 106 are connected at an intermediate location 108 which, as will be appreciated from the following description, serves as an ozone outlet.
- Front chamber 104 has located therein an active electrode 5 which is operated so as to provide generation of ions by corona discharge, and which typically is needleshaped, although any other suitable shape can also be used.
- Front chamber has an ion exit port, referenced 7 , at which is located a passive electrode 6 .
- Passive electrode 6 is illustrated, by way of example, as being a ring or torroid, but any other closedshape electrode may be used in place thereof.
- the rear chamber 106 has located therein a negative pressure source, referenced 2 , such as an extractor fan, or the like. Under the influence of the negative pressure source 2 , ozone which is produced during ion production, is removed under negative pressure through the upstream ozone outlet 108 , and through an adsorbing filter 3 , such as an active carbon filter, located thereat.
- a negative pressure source referenced 2
- an extractor fan or the like.
- a constant direct voltage of polarity conforming to a required ion polarity is supplied to both the active and passive inactive electrodes, 5 and 7 respectively.
- a high pulse voltage of determined frequency is applied to the active electrode relative to the inactive one, with voltage polarity corresponding the required ion polarity, thereby to establish an electrical field between active electrode 5 and passive electrode 7 , causing an ion flow along the electrical field, towards passive electrode 7 , for the duration of the pulse.
- the duration of the high voltage pulse, at the particular amplitude is chosen to be shorter than the time it takes the ions to reach the inactive electrodes.
- positive and negative ions as well as neutral ozone molecules are produced near the sharp point of the active electrode, due to the well known corona discharge phenomenon.
- the time duration of high voltage pulse under the particular amplitude is chosen to be shorter than the time it takes the ions to pass from the active to the passive electrode, and thus during the period of the pulse duration the ions cannot reach the inactive electrode.
- both of the electrodes are connected to a common current source. Accordingly, in the period between pulses, a potential of equal magnitude and polarity is applied to both electrodes, the polarity being the same as that of the ions in the ion stream. During this period, despite the absence of an electrical field between the electrodes, the ions continue moving toward passive electrode 7 under inertia and, as the ions and the passive electrode 7 both carry a charge with the same polarity, the ion stream is repelled generally radially by the electrode 7 , so as to be focused and thus to exit the device in a generally concentrated stream. This results in a high coefficient of ion removal from the device.
- Ozone produced during the ion generation is removed under a negative pressure gradient, by means of a fan or compressor 3 , through the ozone outlet 108 , and is neutralized by means of adsorption filter 3 , thereby removing ozone in the ion stream.
- the velocity at which the ozone is removed may reach, for example, 100 cm/sec, and is thus much slower than the speed of the ion stream, exemplified above as being in the range 6,000-12,000 cm/sec.
- the pulse frequency is determined by a commutative pulse generator 11 .
- Clamp 10 of generator 11 is connected to the base of transistor 13 whole collector is connected to the cathode of diode 14 and to the end of the primary Winding 15 of the transformer 9 .
- the front end of the winding 15 is connected to the positive clamp 16 of the direct voltage source 17 , while its negative clamp 18 is connected to the anode of diode 14 , to the transistor 13 emitter, to a ground terminal 19 , and to the clamp 12 of the generator 11 .
- the pulses produced on the primary winding 15 are raised by the transformer 9 and a high pulse voltage is applied to the secondary windings 20 an of the high voltage pulse 21 of transformer 9 .
- the front end of the winding 20 is connected to the active electrode 5 and the end of it to the inactive electrode 6 , to the front end of the winding 21 and to one of the plates of capacitor 23 .
- the second plate of capacitor 23 is connected to the cathode of diode 22 and by resistor 24 to ground terminal 19 .
- the anode of diode 22 is connected to the end of winding 21 .
- the pulse voltage on winding 21 charges the capacitor 23 up to the peak value, and the capacitor 23 acts as direct voltage source.
- resistor 24 for safety, in order to limit the electric current intensity there is provided resistor 24 .
- circuitry is by way of example only, and that any alternative means for providing the same mode of operation as described above, may also be used.
- device 100 may be formed and operated in accordance with the following:
- the distance ‘d’ between the active and inactive electrodes may be in the order 0.5 mm;
- the amplitude of the high voltage pulses may be in the region of 6 kV;
- Pulse frequency approximately 5.0 kHz
- the direct voltage supplied to electrodes 5 and 7 may be approximately 2.4 kV, at a current of 1 microampere.
- device 100 when manufactured and operated in accordance with the above technical specifications, has an efficiency in the region of 80%.
Abstract
Description
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL11961396A IL119613A (en) | 1996-11-14 | 1996-11-14 | Method and apparatus for the generation of ions |
PCT/IL1997/000363 WO1998021791A1 (en) | 1996-11-14 | 1997-11-10 | Method and device for ion generation |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL1997/000363 Continuation WO1998021791A1 (en) | 1996-11-14 | 1997-11-10 | Method and device for ion generation |
Publications (1)
Publication Number | Publication Date |
---|---|
US6373680B1 true US6373680B1 (en) | 2002-04-16 |
Family
ID=11069478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/568,606 Expired - Fee Related US6373680B1 (en) | 1996-11-14 | 2000-05-10 | Method and device for ion generation |
Country Status (9)
Country | Link |
---|---|
US (1) | US6373680B1 (en) |
EP (1) | EP1036429B1 (en) |
JP (1) | JP2002538576A (en) |
AT (1) | ATE237879T1 (en) |
AU (1) | AU739288B2 (en) |
CA (1) | CA2315872A1 (en) |
DE (1) | DE69721079D1 (en) |
IL (1) | IL119613A (en) |
WO (1) | WO1998021791A1 (en) |
Cited By (33)
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---|---|---|---|---|
US20040161872A1 (en) * | 2003-02-13 | 2004-08-19 | Rwe Schott Solar, Inc. | Surface modification of silicon nitride for thick film silver metallization of solar cell |
US20050077250A1 (en) * | 2003-08-01 | 2005-04-14 | Rohm And Haas Electronic Materials, L.L.C. | Methods for recovering metals |
US20050122658A1 (en) * | 2002-04-09 | 2005-06-09 | Yefim Riskin | Method and apparatus for bipolar ion generation |
US20060016685A1 (en) * | 2004-07-26 | 2006-01-26 | Pionetics, Inc. | Textured ion exchange membranes |
US20060169441A1 (en) * | 2005-01-24 | 2006-08-03 | Schlitz Daniel J | Electro-hydrodynamic gas flow cooling system |
US20060187609A1 (en) * | 2002-08-21 | 2006-08-24 | Dunn John P | Grid Electrostatic Precipitator/Filter for Diesel Engine Exhaust Removal |
US20060237662A1 (en) * | 2004-11-12 | 2006-10-26 | Schlitz Daniel J | Ion generation by the temporal control of gaseous dielectric breakdown |
US20060238952A1 (en) * | 2005-04-22 | 2006-10-26 | Kuender Co., Ltd. | Corona discharge apparatus |
US20070157402A1 (en) * | 2006-01-12 | 2007-07-12 | Nrd Llc | Ionized air blower |
US20080216391A1 (en) * | 2007-03-08 | 2008-09-11 | Cortright Randy D | Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons |
US20080219695A1 (en) * | 2007-03-07 | 2008-09-11 | Hiroshi Doshohda | Ozone removal device, image forming apparatus having the same, and method for removing ozone |
US20080217556A1 (en) * | 2007-03-07 | 2008-09-11 | Sharp Kabushiki Kaisha | Electronic apparatus |
DE102007037440A1 (en) | 2007-08-08 | 2009-02-12 | Meltem Wärmerückgewinnung GmbH & Co. KG | Air purifier with O3 neutralizer and air cleaning process |
US20090071328A1 (en) * | 2002-08-21 | 2009-03-19 | Dunn John P | Grid type electrostatic separator/collector and method of using same |
US20090211942A1 (en) * | 2005-12-21 | 2009-08-27 | Cortright Randy D | Catalysts and methods for reforming oxygenated compounds |
US20100076233A1 (en) * | 2008-08-27 | 2010-03-25 | Cortright Randy D | Synthesis of liquid fuels from biomass |
US20100128408A1 (en) * | 2008-11-27 | 2010-05-27 | Makoto Takayanagi | Ozone-less static eliminator |
US20100177519A1 (en) * | 2006-01-23 | 2010-07-15 | Schlitz Daniel J | Electro-hydrodynamic gas flow led cooling system |
US7780833B2 (en) | 2005-07-26 | 2010-08-24 | John Hawkins | Electrochemical ion exchange with textured membranes and cartridge |
US20100269692A1 (en) * | 2009-04-24 | 2010-10-28 | Peter Gefter | Clean corona gas ionization for static charge neutralization |
US20100288975A1 (en) * | 2006-12-20 | 2010-11-18 | Cortright Randy D | Reactor system for producing gaseous products |
US20110009614A1 (en) * | 2009-06-30 | 2011-01-13 | Paul George Blommel | Processes and reactor systems for converting sugars and sugar alcohols |
US20110095200A1 (en) * | 2009-10-26 | 2011-04-28 | Illinois Tool Works, Inc. | Covering wide areas with ionized gas streams |
US20110096457A1 (en) * | 2009-10-23 | 2011-04-28 | Illinois Tool Works Inc. | Self-balancing ionized gas streams |
US20110181996A1 (en) * | 2010-01-22 | 2011-07-28 | Caffarella Thomas E | Battery operated, air induction ionizing blow-off gun |
US8038775B2 (en) | 2009-04-24 | 2011-10-18 | Peter Gefter | Separating contaminants from gas ions in corona discharge ionizing bars |
US8264811B1 (en) * | 2009-03-05 | 2012-09-11 | Richard Douglas Green | Apparatus for the dispersal and discharge of static electricity |
US8562803B2 (en) | 2005-10-06 | 2013-10-22 | Pionetics Corporation | Electrochemical ion exchange treatment of fluids |
CN104456751A (en) * | 2014-11-21 | 2015-03-25 | 珠海格力电器股份有限公司 | Ion wind generating device |
US9757695B2 (en) | 2015-01-03 | 2017-09-12 | Pionetics Corporation | Anti-scale electrochemical apparatus with water-splitting ion exchange membrane |
WO2021038551A1 (en) | 2019-08-29 | 2021-03-04 | Tadiran Consumer And Technology Products Ltd. | Method of separation of components in the corona discharge zone and an ozone-free disinfector using said method |
US20220239072A1 (en) * | 2019-09-23 | 2022-07-28 | Lg Electronics Inc. | Ionic wind generator and electronic device having heat dissipation function using same |
US11967804B2 (en) * | 2019-09-23 | 2024-04-23 | Lg Electronics Inc. | Ionic wind generator and electronic device having heat dissipation function using same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6850403B1 (en) | 2001-11-30 | 2005-02-01 | Ion Systems, Inc. | Air ionizer and method |
US20060159599A1 (en) * | 2003-02-27 | 2006-07-20 | National Institute of Advanced Industrail Science and Technology | Air activating device |
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US4985716A (en) * | 1988-11-10 | 1991-01-15 | Kabushiki Kaisha Toshiba | Apparatus for generating ions using low signal voltage |
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US5153811A (en) * | 1991-08-28 | 1992-10-06 | Itw, Inc. | Self-balancing ionizing circuit for static eliminators |
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-
1996
- 1996-11-14 IL IL11961396A patent/IL119613A/en not_active IP Right Cessation
-
1997
- 1997-11-10 AU AU48820/97A patent/AU739288B2/en not_active Ceased
- 1997-11-10 AT AT97911416T patent/ATE237879T1/en not_active IP Right Cessation
- 1997-11-10 DE DE69721079T patent/DE69721079D1/en not_active Expired - Lifetime
- 1997-11-10 WO PCT/IL1997/000363 patent/WO1998021791A1/en active IP Right Grant
- 1997-11-10 CA CA002315872A patent/CA2315872A1/en not_active Abandoned
- 1997-11-10 EP EP97911416A patent/EP1036429B1/en not_active Expired - Lifetime
- 1997-11-10 JP JP2000600467A patent/JP2002538576A/en not_active Withdrawn
-
2000
- 2000-05-10 US US09/568,606 patent/US6373680B1/en not_active Expired - Fee Related
Patent Citations (13)
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US3696269A (en) * | 1970-11-12 | 1972-10-03 | Hochheiser Electronics Corp | Air processor |
US4102654A (en) * | 1976-07-27 | 1978-07-25 | Raymond Bommer | Negative ionizer |
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Cited By (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050122658A1 (en) * | 2002-04-09 | 2005-06-09 | Yefim Riskin | Method and apparatus for bipolar ion generation |
US7177133B2 (en) | 2002-04-09 | 2007-02-13 | Ionic Systems Ltd. | Method and apparatus for bipolar ion generation |
US20060187609A1 (en) * | 2002-08-21 | 2006-08-24 | Dunn John P | Grid Electrostatic Precipitator/Filter for Diesel Engine Exhaust Removal |
US7585352B2 (en) | 2002-08-21 | 2009-09-08 | Dunn John P | Grid electrostatic precipitator/filter for diesel engine exhaust removal |
US20090071328A1 (en) * | 2002-08-21 | 2009-03-19 | Dunn John P | Grid type electrostatic separator/collector and method of using same |
US20040161872A1 (en) * | 2003-02-13 | 2004-08-19 | Rwe Schott Solar, Inc. | Surface modification of silicon nitride for thick film silver metallization of solar cell |
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US20050077250A1 (en) * | 2003-08-01 | 2005-04-14 | Rohm And Haas Electronic Materials, L.L.C. | Methods for recovering metals |
US20060016685A1 (en) * | 2004-07-26 | 2006-01-26 | Pionetics, Inc. | Textured ion exchange membranes |
US7959780B2 (en) | 2004-07-26 | 2011-06-14 | Emporia Capital Funding Llc | Textured ion exchange membranes |
US20060237662A1 (en) * | 2004-11-12 | 2006-10-26 | Schlitz Daniel J | Ion generation by the temporal control of gaseous dielectric breakdown |
US7214949B2 (en) | 2004-11-12 | 2007-05-08 | Thorrn Micro Technologies, Inc. | Ion generation by the temporal control of gaseous dielectric breakdown |
US20060169441A1 (en) * | 2005-01-24 | 2006-08-03 | Schlitz Daniel J | Electro-hydrodynamic gas flow cooling system |
US7661468B2 (en) | 2005-01-24 | 2010-02-16 | Ventiva, Inc. | Electro-hydrodynamic gas flow cooling system |
US20060238952A1 (en) * | 2005-04-22 | 2006-10-26 | Kuender Co., Ltd. | Corona discharge apparatus |
US7780833B2 (en) | 2005-07-26 | 2010-08-24 | John Hawkins | Electrochemical ion exchange with textured membranes and cartridge |
US8293085B2 (en) | 2005-07-26 | 2012-10-23 | Pionetics Corporation | Cartridge having textured membrane |
US9090493B2 (en) | 2005-10-06 | 2015-07-28 | Pionetics Corporation | Electrochemical ion exchange treatment of fluids |
US8562803B2 (en) | 2005-10-06 | 2013-10-22 | Pionetics Corporation | Electrochemical ion exchange treatment of fluids |
US8231857B2 (en) | 2005-12-21 | 2012-07-31 | Virent, Inc. | Catalysts and methods for reforming oxygenated compounds |
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US20070157402A1 (en) * | 2006-01-12 | 2007-07-12 | Nrd Llc | Ionized air blower |
US20100177519A1 (en) * | 2006-01-23 | 2010-07-15 | Schlitz Daniel J | Electro-hydrodynamic gas flow led cooling system |
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US7973291B2 (en) | 2007-03-07 | 2011-07-05 | Sharp Kabushiki Kaisha | Electronic apparatus |
US20080217556A1 (en) * | 2007-03-07 | 2008-09-11 | Sharp Kabushiki Kaisha | Electronic apparatus |
US20080219695A1 (en) * | 2007-03-07 | 2008-09-11 | Hiroshi Doshohda | Ozone removal device, image forming apparatus having the same, and method for removing ozone |
US7826763B2 (en) * | 2007-03-07 | 2010-11-02 | Sharp Kabushiki Kaisha | Ozone removal device, image forming apparatus having the same, and method for removing ozone |
US8367882B2 (en) | 2007-03-08 | 2013-02-05 | Virent, Inc. | Synthesis of liquid fuels and chemicals from oxygenated hydrocarbons |
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US8350108B2 (en) | 2008-08-27 | 2013-01-08 | Virent, Inc. | Synthesis of liquid fuels from biomass |
US20100076233A1 (en) * | 2008-08-27 | 2010-03-25 | Cortright Randy D | Synthesis of liquid fuels from biomass |
US20100128408A1 (en) * | 2008-11-27 | 2010-05-27 | Makoto Takayanagi | Ozone-less static eliminator |
US8325456B2 (en) * | 2008-11-27 | 2012-12-04 | Trinc.Org | Ozone-less static eliminator |
US8264811B1 (en) * | 2009-03-05 | 2012-09-11 | Richard Douglas Green | Apparatus for the dispersal and discharge of static electricity |
US8038775B2 (en) | 2009-04-24 | 2011-10-18 | Peter Gefter | Separating contaminants from gas ions in corona discharge ionizing bars |
US20100269692A1 (en) * | 2009-04-24 | 2010-10-28 | Peter Gefter | Clean corona gas ionization for static charge neutralization |
US8167985B2 (en) | 2009-04-24 | 2012-05-01 | Peter Gefter | Clean corona gas ionization for static charge neutralization |
US8048200B2 (en) | 2009-04-24 | 2011-11-01 | Peter Gefter | Clean corona gas ionization for static charge neutralization |
US8460433B2 (en) | 2009-04-24 | 2013-06-11 | Illinois Tool Works Inc. | Clean corona gas ionization |
US20110009614A1 (en) * | 2009-06-30 | 2011-01-13 | Paul George Blommel | Processes and reactor systems for converting sugars and sugar alcohols |
US8416552B2 (en) | 2009-10-23 | 2013-04-09 | Illinois Tool Works Inc. | Self-balancing ionized gas streams |
US8693161B2 (en) | 2009-10-23 | 2014-04-08 | Illinois Tool Works Inc. | In-line corona-based gas flow ionizer |
US8717733B2 (en) | 2009-10-23 | 2014-05-06 | Illinois Tool Works Inc. | Control of corona discharge static neutralizer |
US20110096457A1 (en) * | 2009-10-23 | 2011-04-28 | Illinois Tool Works Inc. | Self-balancing ionized gas streams |
US20110095200A1 (en) * | 2009-10-26 | 2011-04-28 | Illinois Tool Works, Inc. | Covering wide areas with ionized gas streams |
US8143591B2 (en) | 2009-10-26 | 2012-03-27 | Peter Gefter | Covering wide areas with ionized gas streams |
US20110181996A1 (en) * | 2010-01-22 | 2011-07-28 | Caffarella Thomas E | Battery operated, air induction ionizing blow-off gun |
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US9757695B2 (en) | 2015-01-03 | 2017-09-12 | Pionetics Corporation | Anti-scale electrochemical apparatus with water-splitting ion exchange membrane |
WO2021038551A1 (en) | 2019-08-29 | 2021-03-04 | Tadiran Consumer And Technology Products Ltd. | Method of separation of components in the corona discharge zone and an ozone-free disinfector using said method |
US20220239072A1 (en) * | 2019-09-23 | 2022-07-28 | Lg Electronics Inc. | Ionic wind generator and electronic device having heat dissipation function using same |
US11967804B2 (en) * | 2019-09-23 | 2024-04-23 | Lg Electronics Inc. | Ionic wind generator and electronic device having heat dissipation function using same |
Also Published As
Publication number | Publication date |
---|---|
AU4882097A (en) | 1998-06-03 |
CA2315872A1 (en) | 1998-05-22 |
DE69721079D1 (en) | 2003-05-22 |
EP1036429B1 (en) | 2003-04-16 |
IL119613A (en) | 1998-12-06 |
AU739288B2 (en) | 2001-10-11 |
EP1036429A1 (en) | 2000-09-20 |
EP1036429A4 (en) | 2001-01-31 |
ATE237879T1 (en) | 2003-05-15 |
WO1998021791A1 (en) | 1998-05-22 |
JP2002538576A (en) | 2002-11-12 |
IL119613A0 (en) | 1997-02-18 |
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